/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.commons.io.file;
  
  import static org.apache.commons.io.file.CounterAssertions.assertCounts;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.NoSuchFileException;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link DeletingPathVisitor}.
   */
  public class PathUtilsDeleteDirectoryTest extends AbstractTempDirTest {
  
      @Test
      public void testDeleteAbsentDirectory() throws IOException {
          final Path absent = tempDirPath.resolve("ThisDirectoryDoesNotExist");
          assertFalse(Files.exists(absent));
          final Class<NoSuchFileException> expectedType = NoSuchFileException.class;
          assertThrows(expectedType, () -> PathUtils.deleteDirectory(absent));
          assertThrows(expectedType, () -> PathUtils.deleteDirectory(absent, StandardDeleteOption.OVERRIDE_READ_ONLY));
          assertThrows(expectedType, () -> PathUtils.deleteDirectory(absent, PathUtils.EMPTY_DELETE_OPTION_ARRAY));
          // This will throw if not empty.
          Files.deleteIfExists(tempDirPath);
      }
  
      /**
       * Tests a directory with one file of size 0.
       */
      @Test
      public void testDeleteDirectory1FileSize0() throws IOException {
          PathUtils.copyDirectory(Paths.get("src/test/resources/org/apache/commons/io/dirs-1-file-size-0"), tempDirPath);
          assertCounts(1, 1, 0, PathUtils.deleteDirectory(tempDirPath));
          // This will throw if not empty.
          Files.deleteIfExists(tempDirPath);
      }
  
      /**
       * Tests a directory with one file of size 0.
       */
      private void testDeleteDirectory1FileSize0(final DeleteOption... options) throws IOException {
          // TODO Setup the test to use FileVisitOption.
          PathUtils.copyDirectory(Paths.get("src/test/resources/org/apache/commons/io/dirs-1-file-size-0"), tempDirPath);
          assertCounts(1, 1, 0, PathUtils.deleteDirectory(tempDirPath, options));
          // This will throw if not empty.
          Files.deleteIfExists(tempDirPath);
      }
  
      @Test
      public void testDeleteDirectory1FileSize0NoOptions() throws IOException {
          testDeleteDirectory1FileSize0(PathUtils.EMPTY_DELETE_OPTION_ARRAY);
      }
  
      @Test
      public void testDeleteDirectory1FileSize0OverrideReadOnly() throws IOException {
          testDeleteDirectory1FileSize0(StandardDeleteOption.OVERRIDE_READ_ONLY);
      }
  
      /**
       * Tests a directory with one file of size 1.
       */
      @Test
      public void testDeleteDirectory1FileSize1() throws IOException {
          PathUtils.copyDirectory(Paths.get("src/test/resources/org/apache/commons/io/dirs-1-file-size-1"), tempDirPath);
          assertCounts(1, 1, 1, PathUtils.deleteDirectory(tempDirPath));
          // This will throw if not empty.
          Files.deleteIfExists(tempDirPath);
      }
  
      /**
       * Tests a directory with two subdirectories, each containing one file of size 1.
       */
      @Test
      public void testDeleteDirectory2FileSize2() throws IOException {
          PathUtils.copyDirectory(Paths.get("src/test/resources/org/apache/commons/io/dirs-2-file-size-2"), tempDirPath);
          assertCounts(3, 2, 2, PathUtils.deleteDirectory(tempDirPath));
          // This will throw if not empty.
         Files.deleteIfExists(tempDirPath);
     }
 
     /**
      * Tests an empty folder.
      */
     @Test
     public void testDeleteEmptyDirectory() throws IOException {
         assertCounts(1, 0, 0, PathUtils.deleteDirectory(tempDirPath));
         // This will throw if not empty.
         Files.deleteIfExists(tempDirPath);
     }
 }